The Ocean Archive System searches our original datasets as they were submitted to us, not individual points or profiles. If you want to search and retrieve ocean profiles in a common format, or objectively analyzed fields, your better option may be to use one of our project applications. See: Access Data
OAS accession Detail for 0239049, meta_version: 1. Current meta_version is: 15
| accessions_id: |
0239049 | archive
|
| Title: |
Upwelling and the persistence of coral-reef frameworks in the eastern tropical Pacific, carbonate data, chlorophyll data, and others from 2015-08-15 to 2018-09-18 (NCEI Accession 0239049) |
| Abstract: |
In an era of global change, the fate and form of reef habitats will depend on shifting assemblages of organisms and their responses to multiple stressors. Multiphyletic assemblages of calcifying and bioeroding species contribute to a dynamic balance between constructive and erosive processes, and reef-framework growth occurs only when calcium-carbonate deposition exceeds erosion. Each contributing species exhibits a unique combination of environmental sensitivities, trophic needs, and competitive abilities, making the net outcome of their habitat-altering behavior difficult to predict. In this study, standardized blocks of clean, massive Porites were placed at six reef sites in the eastern tropical Pacific, in the strongly and more weakly upwelling Gulfs of Panamá (GoP) and Chiriquí (GoC), respectively. Sites were instrumented to characterize the unique thermal and carbonate-chemistry conditions of each gulf. Satellite products were used to examine differences in sea-surface productivity, and surveys were conducted to quantify the abundance of important grazing taxa. After two years in situ, the Porites blocks were collected and scanned using high-resolution computed tomography (CT) to volumetrically quantify both endolithic and epilithic habitat alteration. Scan-volumes were further classified into functional groups according to morphology to quantify external bioerosion by fish and sea urchins, as well as the calcifying and bioeroding activity of crustose coralline algae, scleractinian corals, mollusks, annelids, and barnacles. The GoP, which has higher productivity, cooler temperatures, and periodically lower pH conditions, had higher rates of macroboring, but also higher rates of calcification. These unexpectedly higher rates of calcification in the GoP were a result of high recruitment of suspension-feeding taxa, particularly barnacles and vermetid gastropods that have poor reef-forming potential. External bioerosion by grazers was the dominant process influencing these dead coral substrates across both gulfs, ultimately contributing to higher rates of net erosion in the GoC and underscoring the important roles that urchins and fish play in not just removing algae on reefs, but also eroding reef habitat. Ultimately these findings reveal that the trophic requirements of habitat-altering taxa are closely tied to reef-framework stability, and that environmental conditions conducive to carbonate precipitation are not necessarily those that will lead to habitat persistence. |
| Date received: |
20210702 |
| Start date: |
20150815 |
| End date: |
20180918 |
| Seanames: |
|
| West boundary: |
-80.01666 |
| East boundary: |
-79.033333 |
| North boundary: |
8.6333308 |
| South boundary: |
7.4264649608 |
| Observation types: |
|
| Instrument types: |
|
| Datatypes: |
|
| Submitter: |
Morris, John |
| Submitting institution: |
US DOC; NOAA; OAR; Atlantic Oceanographic and Meteorological Laboratory |
| Collecting institutions: |
|
| Contributing projects: |
|
| Platforms: |
|
| Number of observations: |
|
| Supplementary information: |
Submission Package ID: C8Y559 |
| Availability date: |
|
| Metadata version: |
1 |
| Keydate: |
2021-07-09 18:00:47+00 |
| Editdate: |
2021-07-09 18:02:42+00 |